/**
 * Test that setShardVersion should not reject a configdb string with the same
 * replica set name, but with a member list that is not strictly the same.
 */
(function() {
"use strict";

var st = new ShardingTest({ shards: 1 });

var testDB = st.s.getDB('test');
testDB.adminCommand({ enableSharding: 'test' });
testDB.adminCommand({ shardCollection: 'test.user', key: { x: 1 }});

// Initialize version on shard.
testDB.user.insert({ x: 1 });

var directConn = new Mongo(st.d0.host);
var adminDB = directConn.getDB('admin');

var configStr = adminDB.runCommand({ getShardVersion: 'test.user' }).configServer;
var alternateConfigStr = configStr.substring(0, configStr.lastIndexOf(','));

var shardDoc = st.s.getDB('config').shards.findOne();

assert.commandWorked(adminDB.runCommand({
    setShardVersion: '',
    init: true,
    authoritative: true,
    configdb: alternateConfigStr,
    shard: shardDoc._id,
    shardHost: shardDoc.host
}));

assert.commandFailed(adminDB.runCommand({
    setShardVersion: '',
    init: true,
    authoritative: true,
    configdb: 'bad-rs/local:12,local:34',
    shard: shardDoc._id,
    shardHost: shardDoc.host
}));

var configAdmin = st.c0.getDB('admin');
// Initialize internal config string.
assert.commandWorked(configAdmin.runCommand({
    setShardVersion: '',
    init: true,
    authoritative: true,
    configdb: configStr,
    shard: 'config'
}));

// Passing configdb that does not match initialized value is not ok.
assert.commandFailed(configAdmin.runCommand({
    setShardVersion: '',
    init: true,
    authoritative: true,
    configdb: 'bad-rs/local:12,local:34',
    shard: 'config'
}));

// Passing configdb that matches initialized value is ok.
assert.commandWorked(configAdmin.runCommand({
    setShardVersion: '',
    init: true,
    authoritative: true,
    configdb: alternateConfigStr,
    shard: 'config'
}));

st.stop();
})();
